Hafren - is the Welsh Goddess of the river Severn, and Her Latin name is 'Sabrina'. Geoffrey of Monmouth tells Her story. A legendary married king of England fell in love with Elfridis who gave birth to a beautiful daughter, Hafren. The king’s jealous queen killed him in battle and ordered Hafren and her mother to be thrown into the river. Hafren then became a goddess of healing and gave Her Name to the river Severn. (Cont. reading below in the comments. Click to view full size.)